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ES456000A1 - Post-treatment of polyurea microcapsules - Google Patents

Post-treatment of polyurea microcapsules

Info

Publication number
ES456000A1
ES456000A1 ES456000A ES456000A ES456000A1 ES 456000 A1 ES456000 A1 ES 456000A1 ES 456000 A ES456000 A ES 456000A ES 456000 A ES456000 A ES 456000A ES 456000 A1 ES456000 A1 ES 456000A1
Authority
ES
Spain
Prior art keywords
microcapsules
core material
polyurea
polyurea shell
isocyanate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES456000A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stauffer Chemical Co
Original Assignee
Stauffer Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stauffer Chemical Co filed Critical Stauffer Chemical Co
Publication of ES456000A1 publication Critical patent/ES456000A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/302—Water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/20—After-treatment of capsule walls, e.g. hardening
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2989—Microcapsule with solid core [includes liposome]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Procedimiento para preparar microcápsulas de poliurea con un nivel reducido de isocianato residual, del tipo que comprenden una envoltura o pared de poliurea alrededor de un material de núcleo inmiscible en agua y dispersado en una fase acuosa continua; caracterizado porque comprende las etapas de: a) polimerización en interfase de una fase orgánica, que contiene un intermediario de isocianato orgánico para la envoltura de poliurea y un material de núcleo, con agua, para formar la envoltura de poliurea alrededor del material de núcleo; b) mantenimiento de las microcàpsulas resultantes a una temperatura de 50ºC aproximadamente; c) tratamiento de las microcápsulas con una cantidad de amoniaco o amina en exceso a la cantidad de isocianato sin reaccionar de las microcápsulas; y, opcionalmente. d) ajuste el pH a un valor inferior a 7 para evitar la descomposición hidrolítica del material de núcleo.Process for preparing polyurea microcapsules with a reduced level of residual isocyanate, of the type comprising a polyurea shell or wall around a core material immiscible in water and dispersed in a continuous aqueous phase; characterized in that it comprises the steps of: a) interface polymerization of an organic phase, containing an organic isocyanate intermediate for the polyurea shell and a core material, with water, to form the polyurea shell around the core material; b) keeping the resulting microcapsules at a temperature of approximately 50 ° C; c) treating the microcapsules with an amount of ammonia or amine in excess of the amount of unreacted isocyanate in the microcapsules; and optionally. d) Adjust the pH to a value lower than 7 to avoid hydrolytic decomposition of the core material.

ES456000A 1976-02-17 1977-02-17 Post-treatment of polyurea microcapsules Expired ES456000A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/658,212 US4046741A (en) 1976-02-17 1976-02-17 Post-treatment of polyurea microcapsules

Publications (1)

Publication Number Publication Date
ES456000A1 true ES456000A1 (en) 1978-08-16

Family

ID=24640372

Family Applications (1)

Application Number Title Priority Date Filing Date
ES456000A Expired ES456000A1 (en) 1976-02-17 1977-02-17 Post-treatment of polyurea microcapsules

Country Status (20)

Country Link
US (1) US4046741A (en)
JP (1) JPS5299976A (en)
AT (1) AT350507B (en)
BE (1) BE851515A (en)
BR (1) BR7700906A (en)
CA (1) CA1085238A (en)
DE (1) DE2706329A1 (en)
DK (1) DK66777A (en)
ES (1) ES456000A1 (en)
FR (1) FR2341359A1 (en)
GB (1) GB1513225A (en)
GR (1) GR66095B (en)
HU (1) HU173521B (en)
IL (1) IL51469A (en)
IT (1) IT1086566B (en)
NL (1) NL7701638A (en)
PT (1) PT66194B (en)
RO (1) RO69993A (en)
SU (1) SU673150A3 (en)
ZA (1) ZA77950B (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2541339A1 (en) * 1975-09-17 1977-03-24 Basf Ag PROCESS FOR PRODUCING POLYURETHANE ADHESIVES
US4172192A (en) * 1977-04-04 1979-10-23 Kemerica, Inc. Process for stabilizing thermoplastic polyurethanes and stabilized product
US4156768A (en) * 1977-04-04 1979-05-29 Kemerica, Inc. Process for making and/or modifying polyurethanes
US4140516A (en) * 1977-05-31 1979-02-20 Stauffer Chemical Company Encapsulation process employing phase transfer catalysts
DE2757017C3 (en) * 1977-12-21 1986-07-31 Hoechst Ag, 6230 Frankfurt Process for the production of pressure-resistant polyurethane-polyurea capsules with a structured inner mass
US4280833A (en) * 1979-03-26 1981-07-28 Monsanto Company Encapsulation by interfacial polycondensation, and aqueous herbicidal composition containing microcapsules produced thereby
US4448929A (en) * 1981-08-26 1984-05-15 Stauffer Chemical Company Encapsulation process
US4456569A (en) * 1982-06-01 1984-06-26 Stauffer Chemical Company Encapsulation process
DE3230757A1 (en) * 1982-08-18 1984-02-23 Bayer Ag, 5090 Leverkusen METHOD FOR THE PRODUCTION OF STABILIZED POLYISOCYANATES, STABILIZED POLYISOCYANATES OF RETARDED REACTIVITY AND THEIR USE FOR THE PRODUCTION OF POLYURETHANE
US4681806A (en) * 1986-02-13 1987-07-21 Minnesota Mining And Manufacturing Company Particles containing releasable fill material and method of making same
US5049182A (en) * 1989-02-03 1991-09-17 Ici Americas Inc. Single-package agricultural formulations combining immediate and time-delayed delivery
FR2647363B1 (en) * 1989-05-25 1994-01-14 Roussel Uclaf PROCESS FOR MICRO-ENCAPSULATION OF PHYTOSANITARY PRODUCT BY INTERFACIAL COPOLYMERIZATION AND PRODUCTS OBTAINED
IL104425A (en) * 1992-01-22 1996-10-31 Zeneca Ltd Reduction of the formaldehyde content in microcapsule formulations
US5932285A (en) * 1995-02-17 1999-08-03 Medlogic Global Corporation Encapsulated materials
US5849412A (en) * 1995-02-17 1998-12-15 Medlogic Global Corporation Encapsulated materials
AU6785598A (en) 1997-03-28 1998-10-22 James L. Fergason Microencapsulated liquid crystal and a method and system for using same
US6174467B1 (en) * 1997-03-28 2001-01-16 Ying Yen Hsu Microencapsulated liquid crystal and method
US6080418A (en) * 1997-04-07 2000-06-27 3M Innovative Properties Company Suspensions of microcapsules containing biologically active ingredients and adhesive microspheres
US6248364B1 (en) 1997-04-07 2001-06-19 3M Innovative Properties Company Encapsulation process and encapsulated products
EP1304161B1 (en) * 2001-10-19 2007-02-28 Pacific Corporation Thermotropic liquid crystal polymer microcapsules, a method for preparing the same, and cosmetic compositions containing the same
RU2347608C2 (en) * 2003-05-11 2009-02-27 Бен-Гурион Юниверсити Оф Дзе Негев Рисерч Энд Дивелопмент Оторити Incapsulated essential oils
JP2008518765A (en) * 2004-11-05 2008-06-05 ビーエーエスエフ ソシエタス・ヨーロピア Low viscosity microcapsule dispersion
US20060251688A1 (en) * 2005-02-28 2006-11-09 Council Of Scientific And Industrial Research. Polyurethane microcapsules containing biocide and process for the preparation thereof
ME02956B (en) * 2006-03-30 2018-07-20 Fmc Corp Acetylene carbamide derivatives-polyurea polymers and microcapsules and formulations thereof for controlled release
US9206381B2 (en) 2011-09-21 2015-12-08 Ecolab Usa Inc. Reduced misting alkaline cleaners using elongational viscosity modifiers
WO2014018188A1 (en) 2012-07-27 2014-01-30 Fmc Corporation Formulations of clomazone
US9637708B2 (en) 2014-02-14 2017-05-02 Ecolab Usa Inc. Reduced misting and clinging chlorine-based hard surface cleaner
US10392587B2 (en) 2016-05-23 2019-08-27 Ecolab Usa Inc. Reduced misting alkaline and neutral cleaning, sanitizing, and disinfecting compositions via the use of high molecular weight water-in-oil emulsion polymers
MX392837B (en) 2016-05-23 2025-03-24 Ecolab Usa Inc ACID CLEANING, SANITIZING AND DISINFECTION COMPOSITIONS WITH REDUCED NEBULIZATION THROUGH THE USE OF HIGH MOLECULAR WEIGHT WATER-IN-OIL EMULSION POLYMERS.
EP3589125A1 (en) 2017-03-01 2020-01-08 Ecolab USA, Inc. Reduced inhalation hazard sanitizers and disinfectants via high molecular weight polymers
CA3146010C (en) 2019-07-12 2024-06-04 Ecolab Usa Inc. Reduced mist alkaline cleaner via the use of alkali soluble emulsion polymers

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888408A (en) * 1955-03-21 1959-05-26 Goodyear Tire & Rubber Treatment of flexible cellular polyurethane material with ammonia
NL300468A (en) * 1962-11-24
US3577515A (en) * 1963-12-13 1971-05-04 Pennwalt Corp Encapsulation by interfacial polycondensation
GB1091141A (en) * 1963-12-13 1967-11-15 Wallace & Tiernan Inc Encapsulating liquids or solids by interfacial polymerisation
US3264089A (en) * 1965-12-10 1966-08-02 Archer Daniels Midland Co Slow release fertilizer granule having a plurality of urethane resin coatings
US3655627A (en) * 1969-06-19 1972-04-11 Textron Inc Process for preparing solid particles of urea-urethane polymers
BE790373A (en) * 1971-10-21 1973-02-15 Fuji Photo Film Co Ltd PRESSURE SENSITIVE RECORDING SHEET CONTAINING MICRO-CAPSULES WITH POLYURIDE WALLS
GB1538075A (en) * 1975-03-24 1979-01-10 Champion Paper Co Ltd Formation of microcapsules by interfacial cross-linking and microcapsules produced thereby

Also Published As

Publication number Publication date
FR2341359A1 (en) 1977-09-16
ATA102977A (en) 1978-11-15
GR66095B (en) 1981-01-15
RO69993A (en) 1980-05-15
PT66194B (en) 1978-07-11
ZA77950B (en) 1978-01-25
CA1085238A (en) 1980-09-09
IT1086566B (en) 1985-05-28
DE2706329A1 (en) 1977-08-18
SU673150A3 (en) 1979-07-05
US4046741A (en) 1977-09-06
IL51469A (en) 1979-10-31
HU173521B (en) 1979-06-28
NL7701638A (en) 1977-08-19
IL51469A0 (en) 1977-04-29
BR7700906A (en) 1977-10-18
PT66194A (en) 1977-03-01
FR2341359B1 (en) 1981-04-17
AT350507B (en) 1979-06-11
JPS5299976A (en) 1977-08-22
BE851515A (en) 1977-08-17
DK66777A (en) 1977-08-18
GB1513225A (en) 1978-06-07

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